Decompression Sickness & trapped gas. AHF 2204 Puan Rosdalila Roslan. Decompression Sickness. Henry’s Law. Henry’s Law. The amount of gas in solution is proportional to the partial pressure of that gas over the solution
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Low pressure equilibrium
Double the pressure equilibrium
Double the concentration
As altitude increases, excess nitrogen will begin to try to escape the body to the lower pressure outside. This results in decompression sickness, which can be very painful and even deadly.
Symptoms usually appear within 1 hour of surfacing but can be delayed up to 6 hours.
Flying in a commercial aircraft after diving may cause "the bends" to develop in the airplane because the cabin pressure is less than sea level pressure
Middle ear squeezes occur because of obstruction of the eustachian tube.
Valsalva maneuver is performed by closing the mouth, pinching the nostrils closed and blowing air through the nose. This will force air up the eustachian tube and into the middle ear.
Equalization of pressure to relieve pain in the sinuses is best accomplished by use of:
Some of the foods that more commonly disagree with individuals are: onions, cabbage, raw apples, radishes, dried beans, cucumbers, melons-or any food that you know causes you problems.